2019-09-11 19:59:49 +00:00
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// Copyright (C) 2019 Sebastian Dröge <sebastian@centricular.com>
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use glib_sys;
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use gst_sys;
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use glib::translate::*;
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use glib::subclass::prelude::*;
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use Device;
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use DeviceProvider;
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use DeviceProviderClass;
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use LoggableError;
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2020-07-25 08:02:04 +00:00
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pub trait DeviceProviderImpl: DeviceProviderImplExt + ObjectImpl + Send + Sync {
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2019-09-11 19:59:49 +00:00
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fn probe(&self, device_provider: &DeviceProvider) -> Vec<Device> {
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self.parent_probe(device_provider)
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}
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fn start(&self, device_provider: &DeviceProvider) -> Result<(), LoggableError> {
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self.parent_start(device_provider)
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}
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fn stop(&self, device_provider: &DeviceProvider) {
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self.parent_stop(device_provider)
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}
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}
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pub trait DeviceProviderImplExt {
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fn parent_probe(&self, device_provider: &DeviceProvider) -> Vec<Device>;
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fn parent_start(&self, device_provider: &DeviceProvider) -> Result<(), LoggableError>;
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fn parent_stop(&self, device_provider: &DeviceProvider);
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}
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2020-07-25 08:02:04 +00:00
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impl<T: DeviceProviderImpl> DeviceProviderImplExt for T {
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2019-09-11 19:59:49 +00:00
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fn parent_probe(&self, device_provider: &DeviceProvider) -> Vec<Device> {
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unsafe {
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2020-07-25 08:02:04 +00:00
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let data = T::type_data();
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2019-09-11 19:59:49 +00:00
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let parent_class =
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data.as_ref().get_parent_class() as *mut gst_sys::GstDeviceProviderClass;
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if let Some(f) = (*parent_class).probe {
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FromGlibPtrContainer::from_glib_full(f(device_provider.to_glib_none().0))
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} else {
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Vec::new()
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}
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}
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}
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fn parent_start(&self, device_provider: &DeviceProvider) -> Result<(), LoggableError> {
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unsafe {
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2020-07-25 08:02:04 +00:00
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let data = T::type_data();
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2019-09-11 19:59:49 +00:00
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let parent_class =
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data.as_ref().get_parent_class() as *mut gst_sys::GstDeviceProviderClass;
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let f = (*parent_class).start.ok_or_else(|| {
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gst_loggable_error!(::CAT_RUST, "Parent function `start` is not defined")
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})?;
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gst_result_from_gboolean!(
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f(device_provider.to_glib_none().0),
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::CAT_RUST,
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"Failed to start the device provider using the parent function"
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)
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}
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}
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fn parent_stop(&self, device_provider: &DeviceProvider) {
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unsafe {
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2020-07-25 08:02:04 +00:00
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let data = T::type_data();
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2019-09-11 19:59:49 +00:00
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let parent_class =
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data.as_ref().get_parent_class() as *mut gst_sys::GstDeviceProviderClass;
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if let Some(f) = (*parent_class).stop {
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f(device_provider.to_glib_none().0);
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}
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}
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}
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}
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pub unsafe trait DeviceProviderClassSubclassExt: Sized + 'static {
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fn set_metadata(
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&mut self,
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long_name: &str,
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classification: &str,
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description: &str,
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author: &str,
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) {
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unsafe {
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gst_sys::gst_device_provider_class_set_metadata(
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self as *mut Self as *mut gst_sys::GstDeviceProviderClass,
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long_name.to_glib_none().0,
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classification.to_glib_none().0,
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description.to_glib_none().0,
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author.to_glib_none().0,
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);
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}
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}
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fn add_metadata(&mut self, key: &str, value: &str) {
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unsafe {
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gst_sys::gst_device_provider_class_add_metadata(
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self as *mut Self as *mut gst_sys::GstDeviceProviderClass,
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key.to_glib_none().0,
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value.to_glib_none().0,
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);
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}
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}
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}
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unsafe impl DeviceProviderClassSubclassExt for DeviceProviderClass {}
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2020-11-05 13:18:19 +00:00
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unsafe impl<T: DeviceProviderImpl> IsSubclassable<T> for DeviceProvider {
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fn override_vfuncs(klass: &mut glib::object::Class<Self>) {
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<glib::Object as IsSubclassable<T>>::override_vfuncs(klass);
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2019-09-11 19:59:49 +00:00
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unsafe {
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2020-11-05 13:18:19 +00:00
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let klass = &mut *(klass.as_mut() as *mut gst_sys::GstDeviceProviderClass);
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2019-09-11 19:59:49 +00:00
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klass.probe = Some(device_provider_probe::<T>);
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klass.start = Some(device_provider_start::<T>);
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klass.stop = Some(device_provider_stop::<T>);
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}
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}
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}
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2020-07-25 08:02:04 +00:00
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unsafe extern "C" fn device_provider_probe<T: DeviceProviderImpl>(
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2019-09-11 19:59:49 +00:00
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ptr: *mut gst_sys::GstDeviceProvider,
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2020-07-25 08:02:04 +00:00
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) -> *mut glib_sys::GList {
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2019-09-11 19:59:49 +00:00
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let instance = &*(ptr as *mut T::Instance);
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let imp = instance.get_impl();
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2020-04-05 14:52:56 +00:00
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let wrap: Borrowed<DeviceProvider> = from_glib_borrow(ptr);
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2019-09-11 19:59:49 +00:00
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imp.probe(&wrap).to_glib_full()
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}
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2020-07-25 08:02:04 +00:00
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unsafe extern "C" fn device_provider_start<T: DeviceProviderImpl>(
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2019-09-11 19:59:49 +00:00
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ptr: *mut gst_sys::GstDeviceProvider,
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2020-07-25 08:02:04 +00:00
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) -> glib_sys::gboolean {
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2019-09-11 19:59:49 +00:00
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let instance = &*(ptr as *mut T::Instance);
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let imp = instance.get_impl();
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2020-04-05 14:52:56 +00:00
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let wrap: Borrowed<DeviceProvider> = from_glib_borrow(ptr);
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2019-09-11 19:59:49 +00:00
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match imp.start(&wrap) {
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Ok(()) => true,
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Err(err) => {
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2020-04-05 14:52:56 +00:00
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err.log_with_object(&*wrap);
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2019-09-11 19:59:49 +00:00
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false
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}
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}
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.to_glib()
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}
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2020-07-25 08:02:04 +00:00
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unsafe extern "C" fn device_provider_stop<T: DeviceProviderImpl>(
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ptr: *mut gst_sys::GstDeviceProvider,
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) {
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2019-09-11 19:59:49 +00:00
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let instance = &*(ptr as *mut T::Instance);
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let imp = instance.get_impl();
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2020-04-05 14:52:56 +00:00
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let wrap: Borrowed<DeviceProvider> = from_glib_borrow(ptr);
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2019-09-11 19:59:49 +00:00
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imp.stop(&wrap);
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}
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